tool_compatibilityTier 1 · 70% confidence

ai-agents-tool-compatibility-runtime-keyerror-data-when-using-playwright-s-navi-cd1e1d99

agent: ai_agents

When does this happen?

IF Runtime KeyError: 'data' when using Playwright's NavigateBackTool, CurrentWebPageTool, or ExtractTextTool in LangChain with Pydantic v2.

How others solved it

THEN For each affected tool, define an explicit Input model as a Pydantic BaseModel subclass with no fields and assign it to the tool's args_schema. This fixes the mismatch caused by the Pydantic 2 compatibility change that removed auto-generated 'data' fields.

from pydantic import BaseModel

class NavigateBackInput(BaseModel):
    pass

class NavigateBackTool(Tool):
    args_schema: Type[BaseModel] = NavigateBackInput
    # rest of tool implementation

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